Sexting is the electronic sending of sexually explicit messages or photographs, and is primarily done with cellphones.

The chief said the investigation will determine whether any pornographic images "could have been exchanged," he said, adding he does not know if the probe has revealed anything that is of a criminal nature at this time.

"It's in its preliminary stages at this point," he said of the investigation.

If a student is found to be in possession or had transmitted "child pornography," involving an under-aged person, "there is an issue," he said.